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VACUUM ›› 2020, Vol. 57 ›› Issue (2): 83-87.doi: 10.13385/j.cnki.vacuum.2020.02.16

• 3D Printing Technology • Previous Articles     Next Articles

An Automatic Control Method Based on Laser Peening to Improve Residual Stress of Additive Manufacturing Parts

LIU Dian-hai1,2, LI Lun1,2, ZHOU Bo1,2, ZHAO Ji-bin1,2   

  1. 1.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China;
    2.Institutes for Robotics and Intelligent Manufacturing, Chinese Academy of Sciences, Shenyang 110169, China
  • Received:2019-09-02 Online:2020-03-25 Published:2020-04-24

Abstract: Laser peening technology is adopted to improve the residual stress caused by metal laser deposition on the surface of additive manufacturing parts. Laser peening effectively improves the microstructure of materials, improves mechanical properties and also reduces or delays the formation and propagation of cracks, the fatigue life, wear resistance and corrosion resistance of metal materials are effectively improved. A laser peening automation system constituted by robot, laser, optical path system etc, uses off-line programming, machining environment simulation, system integration control and other methods to solve technological process on the surface of various parts, and the light path system is put in vacuum environment.

Key words: laser peening, additive manufacturing, automatic control, trajectory planning, vacuum

CLC Number: 

  • TN249
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